Patents by Inventor Rudiger Paschotta
Rudiger Paschotta has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10404103Abstract: An optical power beam transmission system, with a directional light transmitter and receiver. The transmitter contains an amplifying laser medium, and this together with a retroreflector in the receiver, forms a laser resonator. When lasing sets in, the receiver can extract optical power through an output coupler and convert it to electrical power. The gain medium may be a disc having a thickness substantially smaller than its lateral dimensions. The laser resonator is operated as a stable resonator to ensure safe operation. This is achieved by use of an adaptive optical element, for reducing the diameter of the energy beam impinging on the gain medium, thereby increasing the overlap between the energy beam and the gain medium. As the transmitter-receiver distance is changed, such as by movement of the receiver, the adaptive optical element focal length changes to ensure that the cavity remains within its stability zone.Type: GrantFiled: May 10, 2017Date of Patent: September 3, 2019Assignee: WI-CHARGE LTD.Inventors: Ortal Alpert, Rudiger Paschotta
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Publication number: 20170373543Abstract: An optical power beam transmission system, with a directional light transmitter and receiver. The transmitter contains an amplifying laser medium, and this together with a retroreflector in the receiver, forms a laser resonator. When lasing sets in, the receiver can extract optical power through an output coupler and convert it to electrical power. The gain medium may be a disc having a thickness substantially smaller than its lateral dimensions. The laser resonator is operated as a stable resonator to ensure safe operation. This is achieved by use of an adaptive optical element, for reducing the diameter of the energy beam impinging on the gain medium, thereby increasing the overlap between the energy beam and the gain medium. As the transmitter-receiver distance is changed, such as by movement of the receiver, the adaptive optical element focal length changes to ensure that the cavity remains within its stability zone.Type: ApplicationFiled: May 10, 2017Publication date: December 28, 2017Inventors: ORTAL ALPERT, RUDIGER PASCHOTTA
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Patent number: 9653949Abstract: An optical power beam transmission systems, with a directional light transmitter and receiver. The transmitter contains an amplifying laser medium, and this together with a retroreflector in the receiver, forms a laser resonator. When lasing sets in, the receiver can extract optical power through an output coupler and convert it to electrical power. The gain medium may be a disc having a thickness substantially smaller than its lateral dimensions. The laser resonator is operated as a stable resonator to ensure safe operation. This is achieved by use of an adaptive optical element, for reducing the diameter of the energy beam impinging on the gain medium, thereby increasing the overlap between the energy beam and the gain medium. As the transmitter-receiver distance is changed, such as by movement of the receiver, the adaptive optical element focal length changes to ensure that the cavity remains within its stability zone.Type: GrantFiled: April 11, 2016Date of Patent: May 16, 2017Assignee: WI-CHARGE LTD.Inventors: Ortal Alpert, Rudiger Paschotta
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Publication number: 20160329754Abstract: An optical power beam transmission systems, with a directional light transmitter and receiver. The transmitter contains an amplifying laser medium, and this together with a retroreflector in the receiver, forms a laser resonator. When lasing sets in, the receiver can extract optical power through an output coupler and convert it to electrical power. The gain medium may be a disc having a thickness substantially smaller than its lateral dimensions. The laser resonator is operated as a stable resonator to ensure safe operation. This is achieved by use of an adaptive optical element, for reducing the diameter of the energy beam impinging on the gain medium, thereby increasing the overlap between the energy beam and the gain medium. As the transmitter-receiver distance is changed, such as by movement of the receiver, the adaptive optical element focal length changes to ensure that the cavity remains within its stability zone.Type: ApplicationFiled: April 11, 2016Publication date: November 10, 2016Inventors: ORTAL ALPERT, RUDIGER PASCHOTTA
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Patent number: 9312660Abstract: An optical power beam transmission systems, with a directional light transmitter and receiver. The transmitter contains an amplifying laser medium, and this together with a retroreflector in the receiver, forms a laser resonator. When lasing sets in, the receiver can extract optical power through an output coupler and convert it to electrical power. The gain medium may be a disc having a thickness substantially smaller than its lateral dimensions. The laser resonator is operated as a stable resonator to ensure safe operation. This is achieved by use of an adaptive optical element, for reducing the diameter of the energy beam impinging on the gain medium, thereby increasing the overlap between the energy beam and the gain medium. As the transmitter-receiver distance is changed, such as by movement of the receiver, the adaptive optical element focal length changes to ensure that the cavity remains within its stability zone.Type: GrantFiled: September 2, 2013Date of Patent: April 12, 2016Assignee: WI-CHARGE LTD.Inventors: Ortal Alpert, Rudiger Paschotta
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Publication number: 20140092929Abstract: An optical power beam transmission systems, with a directional light transmitter and receiver. The transmitter contains an amplifying laser medium, and this together with a retroreflector in the receiver, forms a laser resonator. When lasing sets in, the receiver can extract optical power through an output coupler and convert it to electrical power. The gain medium may be a disc having a thickness substantially smaller than its lateral dimensions. The laser resonator is operated as a stable resonator to ensure safe operation. This is achieved by use of an adaptive optical element, for reducing the diameter of the energy beam impinging on the gain medium, thereby increasing the overlap between the energy beam and the gain medium. As the transmitter-receiver distance is changed, such as by movement of the receiver, the adaptive optical element focal length changes to ensure that the cavity remains within its stability zone.Type: ApplicationFiled: September 2, 2013Publication date: April 3, 2014Applicant: WI-CHARGE LTD.Inventors: ORTAL ALPERT, RUDIGER PASCHOTTA
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Patent number: 8525097Abstract: An optical power beam transmission systems, with a directional light transmitter and receiver. The transmitter contains an amplifying laser medium, and this together with a retroreflector in the receiver, forms a laser resonator. When lasing sets in, the receiver can extract optical power through an output coupler and convert it to electrical power. The gain medium may be a disc having a thickness substantially smaller than its lateral dimensions. The laser resonator is operated as a stable resonator to ensure safe operation. This is achieved by use of an adaptive optical element, for reducing the diameter of the energy beam impinging on the gain medium, thereby increasing the overlap between the energy beam and the gain medium. As the transmitter-receiver distance is changed, such as by movement of the receiver, the adaptive optical element focal length changes to ensure that the cavity remains within its stability zone.Type: GrantFiled: January 4, 2009Date of Patent: September 3, 2013Assignee: Wi-Charge Ltd.Inventors: Ortal Alpert, Rudiger Paschotta
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Publication number: 20100320362Abstract: An optical power beam transmission systems, with a directional light transmitter and receiver. The transmitter contains an amplifying laser medium, and this together with a retroreflector in the receiver, forms a laser resonator. When lasing sets in, the receiver can extract optical power through an output coupler and convert it to electrical power. The gain medium may be a disc having a thickness substantially smaller than its lateral dimensions. The laser resonator is operated as a stable resonator to ensure safe operation. This is achieved by use of an adaptive optical element, for reducing the diameter of the energy beam impinging on the gain medium, thereby increasing the overlap between the energy beam and the gain medium. As the transmitter-receiver distance is changed, such as by movement of the receiver, the adaptive optical element focal length changes to ensure that the cavity remains within its stability zone.Type: ApplicationFiled: January 4, 2009Publication date: December 23, 2010Inventors: Ortal Alpert, Rudiger Paschotta
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Patent number: 7729393Abstract: A surface emitting laser (SEL) with an integrated absorber. A lower mirror and an output coupler define a laser cavity of the SEL. A monolithic gain structure positioned in the laser cavity includes a gain region and an absorber, wherein a saturation fluence of the absorber is less than a saturation fluence of the gain region.Type: GrantFiled: March 19, 2007Date of Patent: June 1, 2010Assignee: Intel CorporationInventors: Ian A. Young, Ursula Keller, Heiko Unold, Rüdiger Paschotta, Silke Schön
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Publication number: 20070189350Abstract: A surface emitting laser (SEL) with an integrated absorber. A lower mirror and an output coupler define a laser cavity of the SEL. A monolithic gain structure positioned in the laser cavity includes a gain region and an absorber, wherein a saturation fluence of the absorber is less than a saturation fluence of the gain region.Type: ApplicationFiled: March 19, 2007Publication date: August 16, 2007Inventors: Ian Young, Ursula Keller, Heiko Unold, Rudiger Paschotta, Silke Schon
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Patent number: 7106764Abstract: A passively mode-locked solid-state laser is designed to emit a continuous-wave train (51, 52) of electromagnetic-radiation pulses, the fundamental repetition rate of the emitted pulses exceeding 1 GHz, without Q-switching instabilities. The laser includes an optical resonator (3.1), a solid-state laser gain element (2) placed inside the optical resonator (3.1), a device (1) for exciting said laser gain element (2) to emit electromagnetic radiation having the effective wavelength, and a device (4) for passive mode locking including a saturable absorber. The laser gain element (2) is a laser material with a stimulated emission cross section exceeding 0.8×10?18 cm2 at the effective wavelength, and is made of Nd:vanadate. The saturable absorber (4) is preferably a semiconductor saturable absorber mirror (SESAM) device. Even higher repetition rates are achieved by operating the laser in the soliton regime. For use in fiber-optical telecommunication, the laser wavelength is preferably shifted to 1.Type: GrantFiled: July 27, 2000Date of Patent: September 12, 2006Assignee: Gigatera AGInventors: Kurt J. Weingarten, Lukas Krainer, Ursula Keller, Rüdiger Paschotta
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Patent number: 7016103Abstract: An apparatus for generating at least three visible light beams of different output wavelengths for display purposes includes a passively mode-locked solid-state thin-disk laser and a device, including an optical parametric oscillator (OPO) for at least partially converting the primary light beam into electromagnetic radiation having the at least three different output wavelengths. The OPO is preferably an optical fiber feedback OPO. An optical fiber feedback OPO includes a nonlinear optical element and feedback device for feeding back at least a portion of the radiation emitted by the nonlinear medium to the nonlinear element. The feedback device includes an optical fiber.Type: GrantFiled: September 6, 2001Date of Patent: March 21, 2006Assignee: Time-Bandwith Products AGInventors: Rudiger Paschotta, Thomas Sudmeyer, Kurt Weingarten, David C. Hanna
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Publication number: 20060029112Abstract: A surface emitting laser (SEL) with an integrated absorber. A lower mirror and an output coupler define a laser cavity of the SEL. A monolithic gain structure positioned in the laser cavity includes a gain region and an absorber, wherein a saturation fluence of the absorber is less than a saturation fluence of the gain region.Type: ApplicationFiled: March 31, 2004Publication date: February 9, 2006Inventors: Ian Young, Ursula Keller, Heiko Unold, Rudiger Paschotta, Silke Schon
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Patent number: 6778565Abstract: An optically pumped laser with an Er:Yb: doped solid state gain element is disclosed, which is passively mode-locked by means of a saturable absorber mirror. The laser is designed to operate at a fundamental repetition rate exceeding 1 GHz and preferably at an effective wavelength between 1525 nm and 1570 nm. Compared to state of the art solid state pulsed lasers, the threshold for Q-switched-mode-locked operation is substantially improved. Thus, according to one embodiment, the laser achieves a repetition rate beyond 40 GHz. The laser preferably comprises means for wavelength tuning and repetition rate locking.Type: GrantFiled: November 5, 2002Date of Patent: August 17, 2004Assignee: Gigatera AGInventors: Gabriel J. Spuehler, Lukas Krainer, Kurt Weingarten, Rudiger Paschotta, Ursula Keller
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Publication number: 20030210728Abstract: The invention bases on the idea to, in an optical resonator with a prism (1) as reflecting end element, equip the prism (1) with a focusing effect. The focusing effect can e.g. come about by means of a curved surface (12) or by means of an internal lens effect. By introducing the focusing effect the angular dispersion is considerably increased if the resonator parameters are chosen suitably; thus a high negative dispersion of the group velocity or a strong spatial mode or wavelength separation respectively on a short path length is made possible. In an embodiment the optical resonator is restricted by a first reflecting end element (1) and a second reflecting end element (3). The first reflecting end element (1) is designed as a focusing solid body with a first, plane optical surface (11) and a second optical surface (12), whereby the second optical surface (12) is reflective. The resonator further contains a further focusing element (4).Type: ApplicationFiled: February 18, 2003Publication date: November 13, 2003Inventors: Rudiger Paschotta, Jurg Aus Der Au, Ursula Keller
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Publication number: 20030118060Abstract: An optically pumped laser with an Er:Yb: doped solid state gain element is disclosed, which is passively mode-locked by means of a saturable absorber mirror. The laser is designed to operate at a fundamental repetition rate exceeding 1 GHz and preferably at an effective wavelength between 1525 nm and 1570 nm. Compared to state of the art solid state pulsed lasers, the threshold for Q-switched-mode-locked operation is substantially improved. Thus, according to one embodiment, the laser achieves a repetition rate beyond 40 GHz. The laser preferably comprises means for wavelength tuning and repetition rate locking.Type: ApplicationFiled: November 5, 2002Publication date: June 26, 2003Applicant: GIGATERA AGInventors: Gabriel J. Spuehler, Lukas Krainer, Kurt Weingarten, Rudiger Paschotta, Ursula Keller
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Publication number: 20030058904Abstract: An optically pumped laser with an Er:Yb: doped solid state gain element is disclosed, which is passively mode-locked by means of a semiconductor saturable absorber mirror. The laser is designed to operate at a fundamental repetition rate exceeding 1 GHz and preferably at an effective wavelength between 1525 nm and 1570 nm. Compared to state of the art solid state pulsed lasers, the threshold for Q-switched-mode-locked operation is substantially improved. Thus, according to one embodiment, the laser achieves a repetition rate beyond 40 GHz. The laser preferably comprises means for wavelength tuning and repetition rate locking.Type: ApplicationFiled: September 24, 2001Publication date: March 27, 2003Applicant: GigaTera AGInventors: Lukas Krainer, Gabriel J. Spuehler, Rudiger Paschotta, Kurt Weingarten, Ursula Keller